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W. B. SHEDD.

PRINTING PRESS.

No. 286,337. Patented Opt. 9, 1883.

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W. B. SHEDD. PRINTING PRESS..

Patented Oct. 9, 1883'.

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PRINTING PRESS. No. 286,337. Patented Oct. 9, 1883.

UNITED STATES PATENT OFFIQE.

WILLIAM B. sHEDn, on NE YORK, N. Y., ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, or THREE-FOURTHS TO JOHN un'rz, OF JERSEY orrr, NEW JERSEY, AND S. o. FORSAITH & 00., OF MANCHESTER, N. H.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 286,337, dated October 9, 1883, Application filed August 7, 1852. (No model.)

To coZZ whom it may concern.-

Beit known that I, W'ILLIAM'B. SHEDD, of the city, county, and State of New York, have invented a new and useful Improvement in Printing-Presses; and I hereby declare the following to be a full and clear description of the same.

The object of this invention is to construct a printing-press of the class known as jobpresses, with the least possible cost, both as to labor and material, and to so dispose, construct, and operate the mechanism of the press that the movable platen willreceive and carry the paper to be printed on up to the face of the type with great speed, regularity, and exactness, and then stop and hold the paper in position to receive the impression, while the bed moves slightly forward, so as to give the impression with great force, both the bed and platen of the press being at the time of the impression held or forced to ether by means of thrust-rods, the fulcrums 0 which are held together by means of tie-rods crossing themachine at the ends of the bed and platen, and

' acting in planes perpendicular, or nearly perpendicular, to the vertical faces thereof. The nature and details of the invention will fully appear from the subj oined specification, and from the accompanying drawings, of

which- Figure 1 is a transverse sectional elevation of the machine, taken just in front of the operating or cam shaft, from which the different mechanisms of the press are driven. This view Shows only the general mechanism for moving the bed and platen. All other parts are removed forperspicuity. Fig. 2 is a gen eral plan of the machine or press. Fig. 3 is an end elevation of it. Fig. 4 is a longitudinal sectional elevation of the press or machine, taken on the line a; w of Fig. 2. Fig. 5 is a longitudinal sectional elevation of the press or machine, taken on the line 3 3 of Fig. 2. Fig. 6 is a transverse sectional elevation of the press or machine, taken on the. line 2 z of Fig. 2. Fig. 7 is a detail view of the eccentric-pin which couples the rear thrust or impression rod to the bed.

The frame of this machine consists of two side plates, A A, with transverse beams A, and such other connecting parts and appendages as may bercquired to hold the machine together or provide bearings for its operative parts. Principal among these appendages or other parts of the frame are two fulcrumbeams, B and B, and two tie-rods, O, which hold the said fulcrum-beams together and take up the thrust of the compression-levers or followers at the moment of the printing-impression. The beams B B and their tie-rods 0 form anearly rectangular frame, which rests on, and

is supported by, the side plates, A.

The printing operation is performed by and between the bed and platen D E, which are moved and operated as hereinafter described. 6 5 The whole moving mechanism of the press will be operated by and from the driving-shaft F, the outer end of which carries the fast and loose pulleys ff, to which the driving-belt is ap plied. Thefcounter-shaft G, which carries several operating cams, as hereinafter described, has its bearings in the pillow-blocks a a of the two principal ide plates, A A, and its location is such as to place it about in the transverse center of the machine. The said 7 5 counter-Shaft G is driven. by the gear-wheel G on its outer end/and receives its motion from the driving-gear wheel F of the driving-shalt F. The rock-shaft H also has its bearings in suitable pillow-blocks formed on or securedto p the frame-plates A A, and this rock-shaft is driven or operated from and by the countershaft G, in the manner presently explained.

The bed D, which supports and also moves the type during the printing operation, hasaseat, 8 5 (Z, for receiving and holding inposition the type, and it is supported on the tie-rods C by means of the end lugs, d and d which are slotted so as to readily fit and slide on thesaid rods G, as shown in Figs. 1 and 2. The slid- 9o 1 ing movement of the said bed upon the rods C is very limited, being only just enough to readily give the impression, and not more than about half an inch is required for this purpose. The normal position of the bed 1) will be back-i. 0., the position farthest removed from the platen Eeand it will be habitually held'in that position (except when moved forward by the levers hereinafter de scribed) by means of the retaining-springs I I, which in the drawings are represented as coiled springs, surrounding the rods 0, and abutting against lugs or collars a, that are attached to and project from the framerods 0. The bed D is moved forward by thecam D on the counter-shaft G acting on and moving the lever D, which actuates the connecting-rod D, and this connecting-rod actuates the lever D*,

'which, in turn, moves the follower or thrust rod D, the forward end of which presses against the assembling-pin I), which is seated in flanges or other attached portions of the said bed D. The backward and forward positions of the bed D, and the corresponding positions of the actuating mechanism above men tioned, and connected therewith, are respectively shown in Figs. 5 and 6 of the accompanying drawings. Thelever D, which moves the follower or thrust ,rod D, isfulcrumed on the bearing-block'b of the fulcrum-beam 13. The distance between the point of bearing of the lever D on its fulcrum I), and the bearing point at on the same lever, against which the thrust-rod D rests, is very short, and the movement of the said lever is considerable,

so that the force of the said lever, in pressing against the follower or thrust rod D is very great, and the pressure thus brought to bear against the bed D is such as to produce avery strong or powerful impression of the type which are secured to the said bed I). The prime lever D of this series has its outer end pivoted or fulcrumed to a suitable part of the frame of the press, is represented by the lug (6, attached to the cross-beam A of Figs. 5 and 6. A roller or sheave, d, journaled to the side of thesaid lever D", in its central part, rolls against and is actuated by the cam D, the said cam being so constructed that at each rotation of its shaft G itmoves the primary lever D and its attachments up and down twice, thus making two complete reciprocatbed D, and the said bed, in accordance with the movements of the actuating-lever mechanism above described, makes two complete reciprocatlng movements at each rotation of the cam-shaft G. The platen E is pivoted at e to a suitable part of the press-frame, so that it may be turned down into a sloping and nearly fiat position, as shown in Fig. 5, or raised up into a vertical position, as shown in Fig. 6. While in the first named of these positions the paper is placed on the said platen, and

while in the second named orvertical position the paper disposed on the said platen is printed upon or receives an impression from the type which are attached to the bed D. i The platen E is moved from one of the above-named positions to the other position, and vice versa, by means of a system of levers and rods actuated by the cams E, which are fixed to and rotated by the shaft G. The said cams E actuate the levers E the leversE actuate the connecting-rods E, and the connecting-rods E move the sliding, heads E up and down, and carry the platen E along with them, as the said sliding heads move in ways which are fixed to the outside of the said platen. In this manner closed positions, as shown respectively in Figs. 5 and 6. The levers E of this series of mech anism are fulcrumed to a suitable part of the press-frame, as is represented by the lugs (6, attached to the cross-beam A of Figs. 5 and 6.

each of thesaid levers E in its central part, rolls against andis actuated by one of the cams E, the said cams being so constructed that at each rotation of the shaft G they move the said levers E" and their attachments up and down twice, thus making two complete reciprocating movements at each rotation of the said cam-shaft. The sliding heads E are arranged to move in suitable ways, 0", attached to the outside of the platen F. The connecting-rods E have their upper and lower ends, respectively, assembled to the sliding heads E, and to the free or reciprocating ends of the levers E, by means of suitable cylindrical assemblingpins. In this manner the said platen E is moved into its lower and upper positions twice at each revolution of the cam-shaft G, and it is held firmly in its vertical. or printing position by means of the hinge pivot-pin e and by the followers or thrust-rods E One end of each of said followers or thrust-rods E is pivoted to the sliding heads E by the'same pins that assemble the upper ends of the connecting-rods E to it, and the other end of each follower is fulcrumed on the bearing-block b of the beain B. This mechanism is clearly shown in Figs. Sand 6. It permits the followers or thrust-rods to allow the platen E to Fig.5, and also assume the vertical position shown in Fig. 6; and when in the latter position the said followers or thrust-rods will press against the platen E, in a line perpendicular to its printing-face, and in the same plane as that occupied by the axes of the tie-rods O, the beamsB and B, and the followers or thrust- :rod D as is clearly shown in Fig. 6, thereby throwing all the strain exerted in opposite di- 1 rections by the followers D and E at the supreme moment of their action upon the tie-rods C and their cross beams B and B.

struction, as is self evident, secures the greatest possible amount of strength for the least pos 1 sible amount of material, and insures the printthe said platen E is moved into its open and A roller or sheave, c, journaled to the side' of lower down into the open position shown in This coning-impressions between the bed and platen D and E firm, full, and certain. As is shown in the drawings, there is one follower, D and two of those marked E, with their respective actuating mechanisms but, of course, theremay readily be substituted for this arrangement one or more of each of the said systems. The

rockshaft H is moved in harmony with. the

other parts of the machineby means of the driving-cam H on the counter-shaftG. This cam actuates the lever H. by engaging against the sheave h, journaled to the side of the said lever in a manner similar to that described for the prime levers l) and E said lever H is fulcrumed to the press-frame by means of the lugs a in a manner similar to the fulcruming of the levers D' and The other or reciprocating end of the lever H? is assembled to the lowerend of the connectingrod H by means of a suitable pin, and the upper end of the said connecting-rod is also attached, by means of a suitable pin, to the outer or free end of the crank H of the rockshaft II. By means of this mechanism the said rockshaft is rocked back and forth by the cam H twice at eaehrotation of the said cam. The rockshaft H is used to operate the ink-rollers--i. a, move them up and down over the face of the typewhich are fixed to the face of the bed D. These ink-rollers K are attached to a sliding head, is, that moves in its normal seat the wa 'SJt' which are formed on its ends, will be in alignment with that portion of the said ways which are formed 011 the plates A; but when the said bed D is thrown forward to its impression position, the said ways k,which areformed on it,will be carried along with it; but as the mechanism for operating therockshaft His such as to move the sliding head up and down only when the platen or bed D is moved to its rear or normal position, this break of the continuity of the ways k will be of no importance. The sliding head It, to which the ink-rollers K are attached by means of spring-rods k is moved by the rockshaft I-I through the medium of the actuating arms K and the connectingrods K The actuating-arms K are fixed to the rock-shaft H, and move with it, and the connecting-rod One end of the.

\Yhen the bed D is thrown back to K has its upper and lower ends, respectively, attached to the sliding head k and to the actuating-arm K by means of suitable assemblingpins. This mechanism is so constructed as to cause the ink-rollers to rise up to the top of their ways, and then run down to the bottoms of their ways, and remain stationary there duragainst which the follower or thrust rod D rests is made eccentric in form, so that when the full side of it is in contact with the said follower or bed D, the said follower-rod can push it home against the platen E; but when the scant side of it is in contact with the said follower, the follower cannot push the follower or bed'D home against the platen E. The overhanging end of the pin or rod D is attached to a lever or crank, M, and the outer end of this crank is attached to a connecting-rod, m, the forward end of which said connecting-rod is attached to a hand-lever, lV by the side of and at the front of the machine. The pressfeeder can at any moment draw the lever M forward, and thereby prevent the bed Dfrom completing a full stroke up to and against the platen E, and in this manner the pressman can prevent the spoiling of a sheet of paper that mayha-ve been misplaced on the press.

Having described my invention, I. claim- 1. In a printing-press, the compressionframe B B 0, provided with bearings 11 b, in combination with a reciprocating press-bed and oscillating platen, the followers or thrust rods D E, the lever D", vertically-sliding heads E*, and suitable operating mechanism, substantially as shown and described.

2. In a printing-press, the oscillating platen E, sliding heads E, thrust-rods E connectingrods E, levers E cams E, and shaft G, substantially as shown and described.

3. In a printing-press, the combination of reciprocating press-bed D, eccentric-shaft D, crank M, rod on, and hand-lever M, thrustrod D lever D", and actuating devices, with the oscillating platen E, and operating mech .anism, and the rigid frame B B C, substantially as, shown and described.

I -WM.B. SHEDD. lVitnesses;

M. RANDOLPH, E. H. 1J- RANDOLPH. 

